Chain post binder and guide plug therefor



Aprifi 16, 1935. e. w. NEWMAN CHAIN POST BINDER AND GUIDE PLUG THEREFOR Filed March 50, 1934 Patented Apr. 16, 1935 g i UNITED STATES PATENT OFFICE CHAIN POST BINDER AND GUIDE PLUG THEREFOR George W. Newman, St. Louis, Mo., assignor to Loose Leaf Metals Company, a corporation of Missouri Application March 30, 1934, Serial No. 718,110

3 Claims. (01. 12941) The invention relates to chain post binders in projecting boss 2|, for entering a suitable aperwhich the sheet-engaging posts are in the form ture in the lower wall of the bar, this aperture of connected links. These chain sections are having flaring walls. housed within the chamber of the lower binder The plug being inserted through the aperture 5 bar and project through openings in the upper ll, its boss 2! is upset or swaged to completely 5 wall thereof, their outer ends being attached to fill the aperture in the lower wall of the bar, as the upper binder bar and controlling mechanism indicated in Fig. 4, thereby firmly anchoring the being provided for forcing them outwardly and plug within the bar and drawing its flange 20 withdrawing them in order to bind the bars sesnugly against the upper wall thereof. 7 curely upon the sheets attached to the posts. The plug I9 is provided with an elbow channel 10 Difficulty has been encountered in providing 22, which opens through its upper end and suitable guiding means for changing the direction through its side wall, this channel being of such of the posts as they emerge from or are withsize that the chain post may pass therethrough, drawn into the housing. the links of which the post is formed being suffi- This invention consists of a plugadapted to fit ciently short to make the channel turn. In 10- 5 Within the post outlets and be securely anchored eating the plugs within the binder bar it is, of within the binder bar, and having a guide chancourse, necessary to have the lateral opening of nel for the chain opening through its upper end the channel directed longitudinally of the bar.

and through a side wall. The invention, therefore, provides a simple and In the accompanying drawing: eflicient chain guide in the form of a plug, which 20 Fig. 1 is a detail perspective view of a chain may be securely anchored in place and contribpost binder, partly open; utes to the rigidity of the binder bar. The inven- Fig. 2 is a view in perspective of the improved tion cheapens the cost of manufacture, and, in guide plug; addition to providing a reliable guide for the flexi- Fig. 3 is a plan section of the lower binder bar; ble post, strengthens the binder bar and permits 25 and the use of lighter gauge sheet metal in its manu- Fig. 4 is a detail central longitudinal section facture. thereof. I claim as my invention- There is shown in the drawing a chain post l. Aguide plug for chain post binders having an binder comprising upper and lower binder bars elbow channel opening through an end and side 30 Ill, I I, both of the usual form, being made of sheet wall and having an annular flange surrounding metal folded to flattened tubular shape,-the upthe apertured end, and an axially projecting boss per bar being provided with through apertures to at its opposite end.

receive the posts and the lower one constituting a 2. In a loose leaf binder, the combination with housing for the chain posts [2, l3, and the actuata chambered binder bar equipped with chain post ing mechanism therefor, and having outlets for mechanism and having outlets in one wall for the the outer ends of the posts. posts and flaring apertures in its opposite wall, of The post controlling mechanism, with the deguide plugs occupying such openings and each tails of which, however, this invention is not conhaving an elbow channel opening through its outer cerned, is shown as comprising a pair of slotted end and through its side wall within the bar bars I4, 15, to which the chains 12, I3, are at-- chamber, each of such plugs having an annular tached and which are provided with threaded apflange at its upper end for engaging the upper ertures for receiving an actuating screw rod l6. face of the bar and an axial boss at'itsinner end The upper wall of the bar If is apertured, as to enter and be expanded within one of the flarshown at l1, l8, to provide outlets for the chain ing apertures. 45 posts, and these apertures are made sufficiently 3. In a loose leaf binder, the combination with large to receive the improved guide plugs l9. a chambered binder bar equipped with chain post The plug l9 fits snugly within one of the apermechanism, and having outlets for the posts and tures ll, [8, and is provided with an annular apertures opposite such outlets, of a guide plug flange 20 at its upper end which seats against the occupying and overlapping the margins of each 50 outer face of the top wall of the bar I I, the length pair of the named openings and having an elbow of the plug being such that it seats against the channel for a chain post. inner surface of the lower wall of the bar. The f plug is provided at its inner end with an axially GEORGE W. NEWMAN. 

